I must prove you must prove she must prove we must prove you must prove they must prove
Forma con V-ing
I must be proving you must be proving she must be proving we must be proving you must be proving they must be proving
Perfecto
I must have proven you must have proven she must have proven we must have proven you must have proven they must have proven
Perfecto con V-ing
I must have been proving you must have been proving she must have been proving we must have been proving you must have been proving they must have been proving
Negación
Forma simple
I must not prove you must not prove she must not prove we must not prove you must not prove they must not prove
Forma con V-ing
I must not be proving you must not be proving she must not be proving we must not be proving you must not be proving they must not be proving
Perfecto
I must not have proven you must not have proven she must not have proven we must not have proven you must not have proven they must not have proven
Perfecto con V-ing
I must not have been proving you must not have been proving she must not have been proving we must not have been proving you must not have been proving they must not have been proving
Forma interrogativa
Forma simple
must I prove? must you prove? must she prove? must we prove? must you prove? must they prove?
Forma con V-ing
must I be proving? must you be proving? must she be proving? must we be proving? must you be proving? must they be proving?
Perfecto
must I have proven? must you have proven? must she have proven? must we have proven? must you have proven? must they have proven?
Perfecto con V-ing
must I have been proving? must you have been proving? must she have been proving? must we have been proving? must you have been proving? must they have been proving?
Forma interro-negativa
Forma simple
must I not prove? must you not prove? must she not prove? must we not prove? must you not prove? must they not prove?
Forma con V-ing
must I not be proving? must you not be proving? must she not be proving? must we not be proving? must you not be proving? must they not be proving?
Perfecto
must I not have proven? must you not have proven? must she not have proven? must we not have proven? must you not have proven? must they not have proven?
Perfecto con V-ing
must I not have been proving? must you not have been proving? must she not have been proving? must we not have been proving? must you not have been proving? must they not have been proving?